ASNs in the United States: 18,209 networks (Autonomous Systems)

AS749 — DNIC-AS-00749

DNIC-AS-00749 — about 222.2 million IPv4 addresses.

AS16509 — AMAZON-02

AMAZON-02 — about 157.6 million IPv4 addresses.

AS7018 — ATT-INTERNET4

ATT-INTERNET4 — about 90 million IPv4 addresses.

AS8075 — MICROSOFT-CORP-MSN-AS-BLOCK

MICROSOFT-CORP-MSN-AS-BLOCK — about 80.7 million IPv4 addresses.

AS7922 — COMCAST-7922

COMCAST-7922 — about 42.1 million IPv4 addresses.

AS701 — UUNET

UUNET — about 40.6 million IPv4 addresses.

AS721 — DNIC-ASBLK-00721-00726

DNIC-ASBLK-00721-00726 — about 29.5 million IPv4 addresses.

AS3356 — LEVEL3

LEVEL3 — about 27.3 million IPv4 addresses.

AS174 — COGENT-174

COGENT-174 — about 24.6 million IPv4 addresses.

AS396982 — GOOGLE-CLOUD-PLATFORM

GOOGLE-CLOUD-PLATFORM — about 22 million IPv4 addresses.

AS14618 — AMAZON-AES

AMAZON-AES — about 21.6 million IPv4 addresses.

AS6167 — CELLCO-PART

CELLCO-PART — about 18 million IPv4 addresses.

AS714 — APPLE-ENGINEERING

APPLE-ENGINEERING — about 16.9 million IPv4 addresses.

AS209 — CENTURYLINK-US-LEGACY-QWEST

CENTURYLINK-US-LEGACY-QWEST — about 15.7 million IPv4 addresses.

AS21928 — T-MOBILE-AS21928

T-MOBILE-AS21928 — about 13.1 million IPv4 addresses.

AS22773 — ASN-CXA-ALL-CCI-22773-RDC

ASN-CXA-ALL-CCI-22773-RDC — about 12.8 million IPv4 addresses.

AS20115 — CHARTER-20115

CHARTER-20115 — about 12.6 million IPv4 addresses.

AS22394 — CELLCO

CELLCO — about 12.4 million IPv4 addresses.

AS7377 — UCSD

UCSD — about 12.1 million IPv4 addresses.

AS5650 — FRONTIER-FRTR

FRONTIER-FRTR — about 10.6 million IPv4 addresses.

AS7029 — WINDSTREAM

WINDSTREAM — about 10.4 million IPv4 addresses.

AS56 — DNIC-AS-00056

DNIC-AS-00056 — about 7.8 million IPv4 addresses.

AS10796 — TWC-10796-MIDWEST

TWC-10796-MIDWEST — about 7.4 million IPv4 addresses.

AS20001 — TWC-20001-PACWEST

TWC-20001-PACWEST — about 7.1 million IPv4 addresses.

AS2828 — XO-AS15

XO-AS15 — about 6.5 million IPv4 addresses.

AS3561 — CENTURYLINK-LEGACY-SAVVIS

CENTURYLINK-LEGACY-SAVVIS — about 6.4 million IPv4 addresses.

AS1540 — DNIC-ASBLK-01534-01546

DNIC-ASBLK-01534-01546 — about 6.3 million IPv4 addresses.

AS11427 — TWC-11427-TEXAS

TWC-11427-TEXAS — about 5.8 million IPv4 addresses.

AS33363 — BHN-33363

BHN-33363 — about 5.8 million IPv4 addresses.

AS702 — UUNET

UUNET — about 5.7 million IPv4 addresses.

AS31898 — ORACLE-BMC-31898

ORACLE-BMC-31898 — about 5.5 million IPv4 addresses.

AS6128 — CABLE-NET-1

CABLE-NET-1 — about 4.9 million IPv4 addresses.

AS2914 — NTT-DATA-2914

NTT-DATA-2914 — about 4.7 million IPv4 addresses.

AS3549 — LVLT-3549

LVLT-3549 — about 4.5 million IPv4 addresses.

AS6079 — RCN-AS

RCN-AS — about 4.4 million IPv4 addresses.

AS6389 — BELLSOUTH-NET-BLK

BELLSOUTH-NET-BLK — about 4.4 million IPv4 addresses.

AS306 — DNIC-ASBLK-00306-00371

DNIC-ASBLK-00306-00371 — about 4.4 million IPv4 addresses.

AS11426 — TWC-11426-CAROLINAS

TWC-11426-CAROLINAS — about 4.4 million IPv4 addresses.

AS11351 — TWC-11351-NORTHEAST

TWC-11351-NORTHEAST — about 4.3 million IPv4 addresses.

AS3257 — GTT-BACKBONE GTT

GTT-BACKBONE GTT — about 4.3 million IPv4 addresses.

AS16625 — AKAMAI-AS

AKAMAI-AS — about 4.1 million IPv4 addresses.

AS11003 — PANDG

PANDG — about 4.1 million IPv4 addresses.

AS20057 — ATT-MOBILITY-LLC-AS20057

ATT-MOBILITY-LLC-AS20057 — about 4 million IPv4 addresses.

AS4249 — LILLY-AS

LILLY-AS — about 3.9 million IPv4 addresses.

AS36351 — SOFTLAYER

SOFTLAYER — about 3.6 million IPv4 addresses.

AS4155 — USDA-1

USDA-1 — about 3.1 million IPv4 addresses.

AS33491 — COMCAST-33491

COMCAST-33491 — about 3.1 million IPv4 addresses.

AS14061 — DIGITALOCEAN-ASN

DIGITALOCEAN-ASN — about 3.1 million IPv4 addresses.

AS19901 — BRSPD-PUBLIC

BRSPD-PUBLIC — about 3 million IPv4 addresses.

AS12271 — TWC-12271-NYC

TWC-12271-NYC — about 2.9 million IPv4 addresses.

AS19108 — SUDDENLINK-COMMUNICATIONS

SUDDENLINK-COMMUNICATIONS — about 2.8 million IPv4 addresses.

AS1761 — TDIR-CAPNET

TDIR-CAPNET — about 2.8 million IPv4 addresses.

AS668 — DNIC-AS-00668

DNIC-AS-00668 — about 2.6 million IPv4 addresses.

AS11404 — AS-WAVE-1

AS-WAVE-1 — about 2.4 million IPv4 addresses.

AS33651 — CMCS

CMCS — about 2.3 million IPv4 addresses.

AS16591 — GOOGLE-FIBER

GOOGLE-FIBER — about 2.2 million IPv4 addresses.

AS237 — MERIT-AS-14

MERIT-AS-14 — about 2.2 million IPv4 addresses.

AS367 — DNIC-ASBLK-00306-00371

DNIC-ASBLK-00306-00371 — about 2.1 million IPv4 addresses.

AS81 — NCREN

NCREN — about 2 million IPv4 addresses.

AS2152 — CENIC-2152

CENIC-2152 — about 1.9 million IPv4 addresses.

AS270 — AS270 - National Aeronautics and Space Administration

AS270 - National Aeronautics and Space Administration — about 1.9 million IPv4 addresses.

AS33668 — CMCS

CMCS — about 1.9 million IPv4 addresses.

AS3 — MIT-GATEWAYS

MIT-GATEWAYS — about 1.8 million IPv4 addresses.

AS4181 — TDS-AS

TDS-AS — about 1.8 million IPv4 addresses.

AS33652 — CMCS

CMCS — about 1.8 million IPv4 addresses.

AS20214 — COMCAST-20214

COMCAST-20214 — about 1.7 million IPv4 addresses.

AS7385 — ABUL-14-7385

ABUL-14-7385 — about 1.6 million IPv4 addresses.

AS6461 — ZAYO-6461

ZAYO-6461 — about 1.6 million IPv4 addresses.

AS7016 — CCCH-3

CCCH-3 — about 1.6 million IPv4 addresses.

AS33657 — CMCS

CMCS — about 1.6 million IPv4 addresses.

AS10695 — WAL-MART

WAL-MART — about 1.5 million IPv4 addresses.

AS3479 — PEACHNET-AS3479

PEACHNET-AS3479 — about 1.5 million IPv4 addresses.

AS30036 — MEDIACOM-ENTERPRISE-BUSINESS

MEDIACOM-ENTERPRISE-BUSINESS — about 1.5 million IPv4 addresses.

AS7725 — COMCAST-7725

COMCAST-7725 — about 1.5 million IPv4 addresses.

AS27064 — DNIC-ASBLK-27032-27159

DNIC-ASBLK-27032-27159 — about 1.5 million IPv4 addresses.

AS20473 — AS-VULTR

AS-VULTR — about 1.4 million IPv4 addresses.

AS210 — WEST-NET-WEST

WEST-NET-WEST — about 1.4 million IPv4 addresses.

AS15169 — GOOGLE

GOOGLE — about 1.4 million IPv4 addresses.

AS2686 — ATGS-MMD-AS

ATGS-MMD-AS — about 1.4 million IPv4 addresses.

AS13335 — CLOUDFLARENET

CLOUDFLARENET — about 1.4 million IPv4 addresses.

AS33287 — COMCAST-33287

COMCAST-33287 — about 1.3 million IPv4 addresses.

AS8987 — AWS-GOVCLOUD AWS-GOVCLOUD

AWS-GOVCLOUD AWS-GOVCLOUD — about 1.3 million IPv4 addresses.

AS51964 — ORANGE-BUSINESS-SERVICES-IPSN-ASN

ORANGE-BUSINESS-SERVICES-IPSN-ASN — about 1.3 million IPv4 addresses.

AS11492 — CABLEONE

CABLEONE — about 1.3 million IPv4 addresses.

AS22561 — CENTURYLINK-LEGACY-LIGHTCORE

CENTURYLINK-LEGACY-LIGHTCORE — about 1.2 million IPv4 addresses.

AS7459 — GRANDECOM-AS1

GRANDECOM-AS1 — about 1.2 million IPv4 addresses.

AS4010 — DNIC-AS-04010

DNIC-AS-04010 — about 1.2 million IPv4 addresses.

AS3371 — MCI-ASN

MCI-ASN — about 1.2 million IPv4 addresses.

AS72 — SCHLUMBERGER-AS

SCHLUMBERGER-AS — about 1.2 million IPv4 addresses.

AS33659 — CMCS

CMCS — about 1.1 million IPv4 addresses.

AS7155 — VIASAT-SP-BACKBONE

VIASAT-SP-BACKBONE — about 1.1 million IPv4 addresses.

AS109 — CISCOSYSTEMS

CISCOSYSTEMS — about 1.1 million IPv4 addresses.

AS5006 — VOYANT

VOYANT — about 1.1 million IPv4 addresses.

AS22284 — AS22284-DOI-OPS

AS22284-DOI-OPS — about 1.1 million IPv4 addresses.

AS22909 — COMCAST-22909

COMCAST-22909 — about 1.1 million IPv4 addresses.

AS8070 — MICROSOFT-CORP-MSN-AS-BLOCK

MICROSOFT-CORP-MSN-AS-BLOCK — about 1.1 million IPv4 addresses.

AS11776 — ATLANTICBB-JOHNSTOWN

ATLANTICBB-JOHNSTOWN — about 1.1 million IPv4 addresses.

AS46690 — SNET-FCC

SNET-FCC — about 1 million IPv4 addresses.

AS1226 — CTA-42-AS1226

CTA-42-AS1226 — about 1 million IPv4 addresses.

AS13367 — COMCAST-13367

COMCAST-13367 — about 1 million IPv4 addresses.

AS33667 — CMCS

CMCS — about 996.4 thousand IPv4 addresses.

AS18676 — AVAYA

AVAYA — about 978.9 thousand IPv4 addresses.

AS36352 — AS-COLOCROSSING

AS-COLOCROSSING — about 975.9 thousand IPv4 addresses.

AS20055 — AS-WHOLESAIL

AS-WHOLESAIL — about 952.1 thousand IPv4 addresses.

AS7792 — 3M-HDQ-AS

3M-HDQ-AS — about 941.6 thousand IPv4 addresses.

AS14593 — SPACEX-STARLINK

SPACEX-STARLINK — about 932.9 thousand IPv4 addresses.

AS637 — DNIC-ASBLK-00616-00665

DNIC-ASBLK-00616-00665 — about 930.6 thousand IPv4 addresses.

AS14654 — WAYPORT

WAYPORT — about 916.5 thousand IPv4 addresses.

AS158 — ERI-AS

ERI-AS — about 912.6 thousand IPv4 addresses.

AS600 — OARNET-AS

OARNET-AS — about 899.3 thousand IPv4 addresses.

AS12083 — WOW-INTERNET

WOW-INTERNET — about 870.7 thousand IPv4 addresses.

AS19527 — GOOGLE-2

GOOGLE-2 — about 860.2 thousand IPv4 addresses.

AS33490 — COMCAST-33490

COMCAST-33490 — about 852 thousand IPv4 addresses.

AS33588 — BRESNAN-33588

BRESNAN-33588 — about 842 thousand IPv4 addresses.

AS1906 — NORTHROP-GRUMMAN

NORTHROP-GRUMMAN — about 833.8 thousand IPv4 addresses.

AS14340 — SALESFORCE

SALESFORCE — about 830.2 thousand IPv4 addresses.

AS36375 — UMICH-AS-5

UMICH-AS-5 — about 826.5 thousand IPv4 addresses.

AS17378 — AS17378 - TierPoint, LLC

AS17378 - TierPoint, LLC — about 824.1 thousand IPv4 addresses.

AS6181 — FUSE-NET

FUSE-NET — about 819.2 thousand IPv4 addresses.

AS46887 — CROWNCASTLE-AS46887

CROWNCASTLE-AS46887 — about 813.1 thousand IPv4 addresses.

AS33070 — RMH-14

RMH-14 — about 798.7 thousand IPv4 addresses.

AS231 — MISU-231

MISU-231 — about 783.4 thousand IPv4 addresses.

AS11232 — MIDCO-NET

MIDCO-NET — about 779.8 thousand IPv4 addresses.

AS8103 — STATE-OF-FLA

STATE-OF-FLA — about 772.1 thousand IPv4 addresses.

AS243 — HARRIS-ATD-AS

HARRIS-ATD-AS — about 749.8 thousand IPv4 addresses.

AS2572 — MORENET

MORENET — about 743.6 thousand IPv4 addresses.

AS11686 — ENA

ENA — about 734.7 thousand IPv4 addresses.

AS2687 — ATGS-MMD-AS

ATGS-MMD-AS — about 727.6 thousand IPv4 addresses.

AS6325 — ILLINOIS-CENTURY

ILLINOIS-CENTURY — about 725.8 thousand IPv4 addresses.

AS14265 — US-TELEPACIFIC

US-TELEPACIFIC — about 716.8 thousand IPv4 addresses.

AS703 — UUNET

UUNET — about 694.8 thousand IPv4 addresses.

AS21508 — COMCAST-21508

COMCAST-21508 — about 689.2 thousand IPv4 addresses.

AS3737 — AS-PTD

AS-PTD — about 686.6 thousand IPv4 addresses.

AS8011 — MONGO-8011

MONGO-8011 — about 679.9 thousand IPv4 addresses.

AS46375 — AS-SONICTELECOM

AS-SONICTELECOM — about 673 thousand IPv4 addresses.

AS22258 — COMCAST-22258

COMCAST-22258 — about 664.1 thousand IPv4 addresses.

AS31822 — CITY-UNIVERSITY-OF-NEW-YORK

CITY-UNIVERSITY-OF-NEW-YORK — about 659.7 thousand IPv4 addresses.

AS21859 — ZEN-ECN

ZEN-ECN — about 656.6 thousand IPv4 addresses.

AS4193 — WA-STATE-GOV

WA-STATE-GOV — about 655.9 thousand IPv4 addresses.

AS3128 — BRUWS-AS3128

BRUWS-AS3128 — about 655.6 thousand IPv4 addresses.

AS297 — AS297 - National Aeronautics and Space Administration

AS297 - National Aeronautics and Space Administration — about 649.5 thousand IPv4 addresses.

AS33489 — COMCAST-33489

COMCAST-33489 — about 648.2 thousand IPv4 addresses.

AS14962 — NCR-252

NCR-252 — about 637.4 thousand IPv4 addresses.

AS33661 — CMCS

CMCS — about 630.3 thousand IPv4 addresses.

AS87 — INDIANA-AS

INDIANA-AS — about 622.8 thousand IPv4 addresses.

AS33660 — CMCS

CMCS — about 621.8 thousand IPv4 addresses.

AS10753 — LUMEN-LEGACY-L3-CUSTOMER-SHARED-USE

LUMEN-LEGACY-L3-CUSTOMER-SHARED-USE — about 612.9 thousand IPv4 addresses.

AS14977 — STATE-OF-WYOMING-ASN

STATE-OF-WYOMING-ASN — about 595.2 thousand IPv4 addresses.

AS10361 — BLOOMBERG-NET

BLOOMBERG-NET — about 593.7 thousand IPv4 addresses.

AS2897 — GEORGIA-1

GEORGIA-1 — about 589.8 thousand IPv4 addresses.

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